Even though you can’t see it, the air you breathe can affect your health. Polluted air can cause difficulty breathing, flare-ups of allergy or asthma, and other lung problems. Long-term exposure to air pollution can raise the risk of other diseases, including heart disease and cancer.
Whether outdoors or indoors, the effects of air pollution are most obvious for those who already have difficulty breathing. All people are likely susceptible to the adverse effects of air pollution, but people who have chronic lung diseases such as asthma are more susceptible.